EP 0529339 A1 19930303 - Fibre optic sensor.
Title (en)
Fibre optic sensor.
Title (de)
Faseroptischer Sensor.
Title (fr)
Capteur à fibre optique.
Publication
Application
Priority
DE 4128687 A 19910829
Abstract (en)
In a fibre-optic sensor for measuring electrical fields and voltages, two separate similar two-mode fibres (4a, 4b) are connected in series with one another in the manner of a tandem-type interferometer instead of one continuous two-mode fibre between sensor head (14) and analyser (13). The first two-mode fibre (4a) is arranged, together with the sensor element (6), in the sensor head (14). The second two-mode fibre (4b) is located inside the separate analyser (13). In this manner, sensor head (14) and analyser (13) are exclusively connected by insensitive monomode fibres (2a, 2b). <IMAGE>
Abstract (de)
Bei einem faseroptischen Sensor zur Messung elektrischer Felder und Spannungen werden anstelle einer zwischen Sensorkopf (14) und Auswerteeinheit (13) durchgehenden Zwei-Moden-Faser zwei getrennte, gleichartige Zwei-Moden-Fasern (4a,4b) nach Art eines Tandem-Interferometers hintereinandergeschaltet. Die erste Zwei-Modenfaser (4a) ist zusammen mit dem Sensorelement (6) im Sensorkopf (14) angeordnet. Die zweite Zwei-Moden-Faser (4b) befindet sich innerhalb der separaten Auswerteeinheit (13). Sensorkopf (14) und Auswerteeinheit (13) sind auf diese Weise ausschliesslich durch unempfindliche Monomode-Fasern (2a,2b) verbunden. <IMAGE>
IPC 1-7
IPC 8 full level
G01R 15/24 (2006.01); G01R 19/00 (2006.01); G01R 29/08 (2006.01)
CPC (source: EP US)
G01R 15/248 (2013.01 - EP US); G01R 29/0885 (2013.01 - EP US)
Citation (search report)
- [AD] EP 0433824 A1 19910626 - ASEA BROWN BOVERI [CH]
- [A] EP 0277699 A2 19880810 - LITTON SYSTEMS INC [US]
- [XP] BOHNERT K., DE WIT G., NEHRING J.: "INTERROGATION OF A REMOTE ELLIPTICAL-CORE DUAL-MODE FIBER STRAIN SENSOR BY USING A TANDEM INTERFEROMETER CONFIGURATION.", OPTICS LETTERS, OPTICAL SOCIETY OF AMERICA, US, vol. 17., no. 09., 1 May 1992 (1992-05-01), US, pages 694 - 696., XP000265235, ISSN: 0146-9592
- [A] MURPHY K. A., ET AL.: "ELLIPTICAL-CORE TWO-MODE OPTICAL-FIBER SENSOR IMPLEMENTATION METHODS.", JOURNAL OF LIGHTWAVE TECHNOLOGY., IEEE SERVICE CENTER, NEW YORK, NY., US, vol. 08., no. 11., 1 November 1990 (1990-11-01), US, pages 1688 - 1696., XP000174439, ISSN: 0733-8724, DOI: 10.1109/50.60567
- [AD] APPLIED OPTICS Bd. 29, Nr. 30, 20. Oktober 1990, NEW YORK US Seiten 4473 - 4480 A.S. GERGES ET AL. 'COHERENCE TUNED FIBER OPTIC SENSING SYSTEM, WITH SELF-INITIALIZATION, BASED ON A MULTIMODE LASER DIODE'
Designated contracting state (EPC)
CH DE FR GB IT LI SE
DOCDB simple family (publication)
EP 0529339 A1 19930303; EP 0529339 B1 19981014; CA 2076579 A1 19930301; CA 2076579 C 20010102; DE 4128687 A1 19930304; DE 59209526 D1 19981119; JP 3188528 B2 20010716; JP H05209899 A 19930820; US 5339026 A 19940816
DOCDB simple family (application)
EP 92113047 A 19920731; CA 2076579 A 19920821; DE 4128687 A 19910829; DE 59209526 T 19920731; JP 22990192 A 19920828; US 93679992 A 19920828